Safe Title/Action in 16:9

So as I've always understood it in 4:3 world safe action is 90% full screen and safe title is 80% full screen. Since the screen is wider than it is tall, the left and right "margins" are slightly wider than the top and bottom. That's all fine, but in the wider 16:9 aspect ratio, the difference between these 90%/80% margins become even more drastic and noticeable. The margins on the left and right are now much more than the margins on the top and bottom.

My question is whether safe title and safe action are still 90% and 80% in the wider 16:9 aspect ratio? For one, the difference between the top and bottom margins seems overly obvious. But also, I would think that modern non-tube monitors have much less "at-risk" area around the edges, so you should be able to fill the screen a little more with confidence. No?

(I didn't know the best place to ask this so this was cross posted to "Broadcast Video" too.)